Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2014 | 85,6 | -2,19% |
| 2013 | 87,5 | 0,05% |
| 2012 | 87,5 | -0,15% |
| 2011 | 87,6 | -2,55% |
| 2010 | 89,9 | 3,00% |
| 2009 | 87,3 | 0,39% |
| 2008 | 86,9 | 2,29% |
| 2007 | 85,0 | 0,89% |
| 2006 | 84,2 | 3,96% |
| 2005 | 81,0 | 7,41% |
| 2004 | 75,4 | 0,22% |
| 2003 | 75,3 |